Maternal socio-demographic characteristics		Birth weight				p-value	OR gross	IC (95%)
		<2500 g		≥2500 g
		n = 60	%	n = 130	%
Married mothers
	Yes	29	25.2	86	74.8	0.019	2.1	[1.1 - 3.9]
	No	31	41.3	44	58.7	0.019	2.1	[1.1 - 3.9]
Educated mothers
	Yes	49	29.9	115	70.1	0.205	0.6	[0.2 - 1.4]
	No	11	42.3	15	57.7	0.205	0.6	[0.2 - 1.4]
Maternal age (years)
	<35	60	100	125	96.2	0.125	1.9	[0.9 - 1.92]
	≥35	0.0	0.0	5	3.8	0.125	1.9	[0.9 - 1.92]
Maternal weight (kg)
	<60	40	35.7	72	64.3	0.038	1.5	[1.2 - 2.0]
	≥60	20	25.6	58	44.6	0.038	1.5	[1.2 - 2.0]